I was at my friend SN's house, we were waiting to head out for some fun, while at his place I kept hearing a super high pitch static type noise. It was nearly impossible to tell what direction it was coming from but there seem to be a pattern of annoying noise 2 seconds of non-noise and noise again. I asked what it was but SN was unable to hear it and was giving me a look like I was totally whacked. As I wandered around the house determined to find the source, I located an off white box plugged into the wall outlet. The box had a blue light that blinked in perfect sync with the noise I was hearing. I asked what the device was for and he explained it was for repelling pests like Mice, ants, and spiders, and that humans should not be able to hear it. I guess this settles it.....I'm a pest
